They came no longer when the box was hermetically sealed.

So far this was only a repetition of the feats of the Great Peacock.
A box perfectly closed, so that the air contained therein had no communication with the external atmosphere, left the male in complete ignorance of the recluse.

Not a single one arrived, even when the box was exposed and plain to see on the window-sill.

Thus the idea of strongly scented effluvia, which are cut off by screens of wood, metal, card, glass, or what not, returns with double force.
I have shown that the great nocturnal moth was not thrown off the scent by the powerful odour of naphthaline, which I thought would mask the extra-subtle emanations of the female, which were imperceptible to human olfactory organs.

I repeated the experiment with the Oak Eggar.